118results about How to "Consistent shrinkage" patented technology

The invention relates to a die, which comprises a first template and a second template, wherein the second template is provided with a surface opposite to the first template; the second template is provided, inwards from the surface, with a wedge-shaped die cavity and a sprue which is communicated with the wedge-shaped die cavity; the wedge-shaped die cavity is provided with a pouring end face connected with the sprue, and a first lateral end face and a second lateral end face which are connected to both sides of the pouring end face respectively; the depth of the first lateral end face of the wedge-shaped cavity is more than that of the second lateral end face; a distance between the sprue and the first lateral end face is less than that between the sprue and the second lateral end face; the sprue is provided with a first sidewall adjacent to the first lateral end face and a second sidewall adjacent to the second lateral end face; and an included angle between the first sidewall and the pouring end face is less than that between the second sidewall and the pouring end face.

The invention relates to an injection molding device, which comprises a molding chamber. The molding chamber is used for manufacturing a wedge-shaped light guide plate which comprises a light incoming surface, a light outgoing surface connected with the light incoming surface, a first side face opposite to the light incoming surface, two second side faces connected with and opposite to the light incoming surface, and a bottom surface opposite to the light outgoing surface; the width of the second side faces is reduced gradually from the light incoming surface to the first side face; the molding chamber is provided with a first inner wall corresponding to the light incoming surface, a second inner wall corresponding to the light outgoing surface, a third inner wall corresponding to the bottom surface, a fourth inner wall corresponding to the first side face, and two fifth inner walls corresponding to the two second side faces; at least one of the fifth inner walls is provided with a first sprue and a second sprue which are used for filling the molding material for the light guide plate; and the distance between the position of the first sprue and the first inner wall is less than that between the position of the second sprue and the second inner wall.

The invention discloses a closed microwave high-temperature sintering roller kiln, in particular a tunnel roller kiln with length of 10 to 50meters, and hearth sectional area of 0.06 to 0.3m<2>. The kiln comprises a main kiln body, a microwave transmission system, a turning channel mechanism, a roller power system, and a kiln door interlocking opening and closing system; the main kiln body is formed by connecting a water draining section, a preheating section, a sintering section, a heat preservation section, a quick cooling section, and a slow cooling section in turn; the turning channel mechanism is mainly formed by a material loading and unloading section and a residual-heat utilization blank drying section and comprises a turning channel, a turning channel roller, and a power system; the power system can poke a pushing plate from the outlet of the main kiln body onto the turning channel and feed the pushing plate into the inlet of the main kiln body through the residual-heat utilization blank drying section; and an inner roller for transmitting the material pushing plate, which is driven by the roller power system, is arranged on the bottom of an inner cavity of the main kiln body. The closed microwave high-temperature sintering roller kiln saves energy and reduces consumption and is environmental-friendly, the shrinkage of the sintered products is consistent and the sintered products have high size consistency, the yield is high, the production efficiency is high and the production cost is low.

The invention discloses a die casting gate structure and die using this structure. The die casting gate structure includes: thimble, thimble sleeve, first gate area and second gate area. The first gate area communicates with the second gate area in certain angle. The thimble passes through the thimble sleeve, one part of which is hold and fixed inside the thimble sleeve, and the rest is hold in the second gate area. With the die casting gate structure and die using this structure of the invention, flux of moulding injection can be increased, and surface property of the product is improved.